一、什么是儲能變流器
儲能逆變器就是將交流電變換成直流電向蓄電池充電儲存,當斷電時再將蓄電池儲存的直流電變換成交流電供負載使用。儲(chu)能(neng)(neng)逆變器(qi)的主要功能(neng)(neng)是實現交流電(dian)網電(dian)能(neng)(neng)與儲(chu)能(neng)(neng)電(dian)池電(dian)能(neng)(neng)之間的能(neng)(neng)量雙向(xiang)傳遞,也是一種雙向(xiang)變流器(qi),可以(yi)適配多種直(zhi)流儲(chu)能(neng)(neng)單元,如超級電(dian)容(rong)器(qi)組、蓄電(dian)池組等。
二、什么是UPS
UPS全稱為Uninterrupted Power Supply,即不間斷電源,可在電網斷電或供電不穩定情況下,為通信、醫療、數據中心等對供電質量有特殊性要求的網絡系統提供穩定的電源保障。目前,市場上應用的UPS主要分為以(yi)下幾種(zhong):
1、后備式(shi)UPS:市(shi)(shi)(shi)電(dian)輸入正常(chang)時,UPS將市(shi)(shi)(shi)電(dian)穩(wen)壓后供應(ying)給負載使用;當市(shi)(shi)(shi)電(dian)輸入超出正常(chang)范(fan)圍(如市(shi)(shi)(shi)電(dian)中斷或(huo)頻率異常(chang)),UPS立(li)即(ji)將蓄電(dian)池(chi)的直(zhi)流電(dian)能轉換成交流電(dian)能,向負載逆變供電(dian)。
2、在線互動式UPS:市電(dian)(dian)輸(shu)入(ru)正常(chang)時,由(you)市電(dian)(dian)為負載(zai)供電(dian)(dian);當(dang)市電(dian)(dian)電(dian)(dian)壓(ya)或頻率異常(chang)時,由(you)UPS穩壓(ya)電(dian)(dian)路穩壓(ya)輸(shu)出(chu)為負載(zai)供電(dian)(dian);當(dang)市電(dian)(dian)掉電(dian)(dian)時,則由(you)蓄電(dian)(dian)池(chi)逆變(bian)為負載(zai)供電(dian)(dian)。
3、在線式UPS:市(shi)電(dian)(dian)正常時,市(shi)電(dian)(dian)經整流電(dian)(dian)路得到直流電(dian)(dian)壓(ya),再逆變輸(shu)出(chu)為負載供(gong)電(dian)(dian);市(shi)電(dian)(dian)掉電(dian)(dian)情況下(xia),則由蓄電(dian)(dian)池逆變輸(shu)出(chu)交流電(dian)(dian)為負載供(gong)電(dian)(dian)。
三、儲能變流器和UPS的區別
UPS和儲能逆變器堪稱“同族兄弟”,都具(ju)有(you)儲能基因(yin),且(qie)都能為系統供(gong)電(dian)的(de)(de)可靠性提供(gong)有(you)力保障。當然,它(ta)們之間也是有(you)區別的(de)(de),而(er)且(qie)其最大(da)(da)差異就在應用端:UPS更多應用于數據存儲系統、醫院供(gong)電(dian)系統、科研(yan)等重要(yao)領域(yu),并以(yi)電(dian)源備份(fen)的(de)(de)身份(fen)充當守護(hu)者(zhe);儲能逆變(bian)器則主(zhu)要(yao)在微(wei)電(dian)網(wang)(wang)、電(dian)網(wang)(wang)調(diao)峰填谷等方面大(da)(da)顯身手。
未來,儲能(neng)逆(ni)變(bian)(bian)的(de)重要性(xing),將在(zai)移動(dong)能(neng)源(yuan)、能(neng)源(yuan)互聯等(deng)方面進一步凸顯。無論是UPS還是光伏儲能(neng)逆(ni)變(bian)(bian)器(qi),都(dou)將憑(ping)借各自特性(xing)在(zai)能(neng)源(yuan)互聯發展中占據一席之地。